Plot Synopsis

Fifth telefilm in the "Signed, Sealed, Delivered" TV movie franchise. With Valentine's Day approaching, Oliver O'Toole, charming leader of a team of postal detectives devoted to tracking down recipients of undeliverable mail, opens the investigation of a mysterious 15-year-old lost letter. Working closely with technophile Shane, he tracks the letter's history, uncovering a dramatic tale of young love, perceived betrayal and murder. When he discovers the letter contains information that could potentially destroy a local politician, he finds he also has a personal connection to the case. Meanwhile, free-spirited Rita and research expert Norman discover a 200-year-old, homemade Valentine's Day card, whose contents could have an enormous impact on American history. As the team of postal workers embark on their missions, the Valentine's Day holiday stirs up insecurities surrounding their romantic lives. When sparks begin to fly between Oliver and Shane, a misunderstanding arises, threatening their budding romance. And when Rita is given a prestigious United States Postal Service honor, she is called out of town, leaving her bewildered boyfriend Norman alone on the holiday. As they each deal with personal heartbreak, Oliver, Shane, Rita and Norman spend Valentine's Day fulfilling their postal duties and wondering if love will find its way into their hearts.